Generalized potential-model description of mutual scattering of the lightest p+d, d+3He nuclei and the corresponding photonuclear reactions.

Abstract

For the problem of interaction between the lightest {ital p}+{ital d}, d+{sup 3}He nuclei supermultiplet expansion of the reaction amplitude {ital T}{sub {ital L}{ital S}} is proposed. We have disclosed the nonpotential character of channels with {ital S}=1/2, where the scattering amplitude is written as a superposition of the potential amplitudes {ital T}{sub {ital L}}{sup ({ital f})} with different symmetries ({ital f}). We have constructed the interaction potentials {ital V}{sub {ital L}}{sup ({ital f})}, ({ital f})=(21), (3) and ({ital f})=(32), (41) for {ital p}+{ital d} and {ital d}+{sup 3}He, respectively. The differential cross sections for {ital p}+{ital d} inelastic scattering with the deuteron spin-isospin flip, which correspond to the available experimental data in the low-energy region, are predicted at higher energies and also for the {ital d}+{sup 3}He system in a broad energy interval. The potential-model approach well describes quantitatively the photonuclear {sup 3}He{gamma}{r arrow}{ital p}+{ital d} and {ital d}+{sup 3}He{r arrow}{sup 5}Li {gamma} processes in a broad photon energy range {ital E}{sub {gamma}}{le}30 MeV.